/* ESP Forge — Midnight Dark Theme (from homelab-dash design system) */

:root {
  /* Backgrounds */
  --bg-deep: #0a0a0f;
  --bg-surface: #12121a;
  --bg-elevated: #1a1a2e;
  --bg-hover: #22223a;

  /* Primary (Purple) */
  --primary-400: #a855f7;
  --primary-500: #8b5cf6;
  --primary-600: #7c3aed;
  --primary-900: #3b0764;

  /* Secondary (Lime) */
  --secondary-300: #bef264;
  --secondary-400: #a3e635;
  --secondary-500: #84cc16;

  /* Semantic */
  --status-ok: #10b981;
  --status-warn: #f59e0b;
  --status-error: #f43f5e;
  --status-info: #38bdf8;

  /* Text */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.10);

  /* Shadows */
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glow-primary: 0 0 20px rgba(139, 92, 246, 0.3);
  --glow-ok: 0 0 12px rgba(16, 185, 129, 0.3);
  --glow-error: 0 0 12px rgba(244, 63, 94, 0.3);

  /* Spacing (8px grid) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

/* Ambient glow */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}
.ambient-glow--1 {
  width: 400px; height: 400px;
  top: -100px; left: -100px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
}
.ambient-glow--2 {
  width: 350px; height: 350px;
  bottom: -80px; right: -80px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, transparent 70%);
}

/* Layout */
.app {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

/* Header */
.header {
  margin-bottom: var(--space-8);
}
.header-title {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.header-title .icon {
  font-size: 1.4rem;
}
.header-subtitle {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  margin-top: var(--space-1);
}

/* Device grid */
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

/* Device card */
.device-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.device-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-500), var(--primary-400));
  opacity: 0;
  transition: opacity var(--transition-base);
}
.device-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-md);
}
.device-card:hover::before {
  opacity: 1;
}

.device-card--add {
  background: transparent;
  border: 2px dashed var(--border-default);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  cursor: pointer;
  color: var(--text-tertiary);
  min-height: 200px;
  transition: all var(--transition-base);
}
.device-card--add:hover {
  border-color: var(--primary-500);
  color: var(--primary-400);
  background: rgba(139, 92, 246, 0.05);
}
.device-card--add .plus {
  font-size: 2rem;
  font-weight: 300;
}

.device-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.device-chip {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* Status badge */
.device-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-3) 0;
  font-size: 0.8rem;
  font-weight: 500;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot--online {
  background: var(--status-ok);
  box-shadow: var(--glow-ok);
}
.status-dot--offline {
  background: var(--text-tertiary);
}

.device-version {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--bg-deep);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: var(--space-3);
}

/* Device meta info */
.device-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-1);
  font-size: 0.7rem;
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
  padding: var(--space-2) 0;
  border-top: 1px solid var(--border-subtle);
}
.device-meta dt {
  font-weight: 500;
}
.device-meta dd {
  text-align: right;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

/* Buttons */
.btn-row {
  display: flex;
  gap: var(--space-2);
}
.btn {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}
.btn:hover {
  background: var(--bg-hover);
  border-color: var(--primary-500);
}
.btn--primary {
  background: var(--primary-600);
  border-color: var(--primary-500);
  color: white;
}
.btn--primary:hover {
  background: var(--primary-500);
  box-shadow: var(--glow-primary);
}

/* ESP Web Tools button override */
esp-web-install-button {
  display: contents;
}
esp-web-install-button button {
  /* Inherit our button styles */
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  min-height: 36px;
}
esp-web-install-button button:hover {
  background: var(--bg-hover);
  border-color: var(--primary-500);
}

/* Modal overlay */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}
.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}
.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  width: min(420px, 90vw);
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition-base);
}
.modal-backdrop.open .modal {
  transform: scale(1);
}
.modal h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.modal label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}
.modal input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-deep);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  margin-bottom: var(--space-3);
  outline: none;
  transition: border-color var(--transition-fast);
}
.modal input:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.15);
}
.modal .btn-row {
  margin-top: var(--space-4);
}

/* Toast */
.toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 300;
  opacity: 0;
  transition: all var(--transition-slow);
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.toast--ok { border-color: var(--status-ok); }
.toast--error { border-color: var(--status-error); }

/* Loading skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--bg-surface) 25%, rgba(255,255,255,0.04) 50%, var(--bg-surface) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}
@keyframes shimmer { to { background-position: -200% 0; } }